{"id":4195,"date":"2020-04-15T17:16:11","date_gmt":"2020-04-15T10:16:11","guid":{"rendered":"https:\/\/bacdau.vn\/?post_type=kb&p=4195"},"modified":"2020-04-15T17:16:11","modified_gmt":"2020-04-15T10:16:11","slug":"3g-va-su-khac-biet-cua-3g-so-voi-2g-va-4g","status":"publish","type":"kb","link":"https:\/\/bacdau.vn\/kb\/3g-va-su-khac-biet-cua-3g-so-voi-2g-va-4g\/","title":{"rendered":"3G v\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t c\u1ee7a 3G so v\u1edbi 2G v\u00e0 4G"},"content":{"rendered":"

3G v\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t c\u1ee7a 3G so v\u1edbi 2G v\u00e0 4G<\/strong><\/span><\/h2>\n

\u0110\u1ea1i \u0111a s\u1ed1 ng\u01b0\u1eddi d\u00e2n ch\u00fang ta \u0111ang s\u1eed m\u1ea1ng l\u00e0 3G. V\u1eady mang 3G l\u00e0 g\u00ec, n\u00f3 kh\u00e1c g\u00ec so v\u1edbi m\u1ea1ng 4G v\u00e0 2G? M\u1eddi c\u00e1c b\u1ea1n c\u00f9ng v\u1edbi B\u1eafc \u0110\u1ea9u<\/strong><\/a>\u00a0\u0111i gi\u1ea3i \u0111\u00e1p nh\u1eefng th\u1eafc m\u1eafc n\u00e0y nh\u00e9.<\/span><\/p>\n

M\u1ea1ng 3G l\u00e0 g\u00ec?<\/strong><\/span><\/h3>\n

\"\"<\/span><\/p>\n

3G l\u00e0 h\u1ec7 th\u1ed1ng thin tin di \u0111\u1ed9ng \u1edf th\u1ebf h\u1ec7 th\u1ee9 3<\/strong>, l\u00e0 m\u1ed9t th\u1ebf h\u1ec7 th\u1ee9 ba theo chu\u1ea9n c\u00f4ng ngh\u1ec7 tr\u00ean \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng. Khi s\u1eed d\u1ee5ng m\u1ea1ng 3G s\u1ebd cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng truy\u1ec1n t\u1ea3i nh\u1eefng d\u1eef li\u1ec7u trong v\u00e0 ngo\u00e0i tho\u1ea1i, c\u00f3 th\u1ec3 t\u1ea3i d\u1eef li\u1ec7u, g\u1eedi email, l\u01b0\u1edbt tin t\u1ee9c …<\/span><\/p>\n

V\u1edbi d\u1ecbch v\u1ee5 c\u00f4ng ngh\u00ea s\u1ed1 3g, c\u00e1c nh\u00e0 cung c\u1ea5p s\u1ebd mang \u0111\u1ebfn cho ng\u01b0\u1eddi ti\u00eau d\u00f9ng nh\u1eefng d\u1ecbch v\u1ee5 \u0111a ph\u01b0\u01a1ng ti\u1ec7n nh\u01b0 \u00e2m nh\u1ea1c \u1edf ch\u1ea5t l\u01b0\u1ee3ng cao, l\u01b0\u1edbt web v\u1edbi h\u00ecnh \u1ea3nh v\u00e0 video s\u1ed1ng \u0111\u1ed9ng, ngo\u00e0i ra c\u00f2n c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ecbnh v\u1ee5 to\u00e0n c\u1ea7u GPS, Video streaming …<\/span><\/p>\n

\"\"<\/span><\/p>\n

S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa m\u1ea1ng 3G v\u00e0 2G, 4G<\/span><\/h3>\n

1\/ So s\u00e1nh 2G v\u00e0 3G<\/span><\/h4>\n

2G<\/strong> ch\u00ednh l\u00e0 th\u1ebf h\u1ec7 m\u1ea1ng di \u0111\u1ed9ng \u0111i\u1ec7n tho\u1ea1i \u1edf th\u1ebf h\u1ec7 th\u1ee9 2, c\u00f3 t\u00ean ti\u1ebfng anh l\u00e0 Global System for Mobile Communications hay c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 GMS, v\u1edbi GMS th\u00ec t\u1ed1c \u0111\u1ed9 m\u1ea1ng c\u00f3 kh\u1ea3 n\u0103ng ph\u1ee7 s\u00f3ng r\u1ed9ng kh\u1eafp n\u01a1i, khi \u0111\u00f3 s\u1ebd gi\u00fap ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng \u1edf kh\u1eafp m\u1ecdi n\u01a1i tr\u00ean th\u1ebf gi\u1edbi.<\/span><\/p>\n

\u0110\u00e2y l\u00e0 m\u1ea1ng \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng c\u00f3 c\u00e1c thi\u1ebft k\u1ebf bao g\u1ed3m r\u1ea5t nhi\u1ec1u tr\u1ea1m thu ph\u00e1t song, ch\u00ednh v\u00ec v\u1eady, c\u00e1c thi\u1ebft b\u1ecb di \u0111\u1ed9ng c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i m\u1ea1ng b\u1eb1ng nhi\u1ec1u c\u00e1ch kh\u00e1c nhau.<\/span><\/p>\n

C\u00e1c d\u00f2ng \u0111i\u1ec7n tho\u1ea1i ph\u1ed5 th\u00f4ng s\u1eed d\u1ee5ng m\u1ea1ng 2G h\u1ed7 tr\u1ee3 nghe, g\u1ecdi v\u00e0 nh\u1eafn tin SMS.<\/span><\/p>\n

* So s\u00e1nh chi ti\u1ebft 2G v\u00e0 3G<\/strong><\/span><\/p>\n

+ M\u1ea1ng 3G c\u00f3 t\u1ed1c \u0111\u1ed9 truy\u1ec1n t\u1ea3i d\u1eef li\u1ec7u, t\u00edn hi\u1ec7u v\u00e0 cu\u1ed9c g\u1ecdi cao h\u01a1n m\u1ea1ng 2G<\/span>
\n+ M\u1ea1ng 3G c\u00f3 th\u1ec3 cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp m\u1ea1ng \u1edf m\u1ecdi l\u00fac v\u00e0 m\u1ecdi n\u01a1i, k\u1ec3 c\u1ea3 \u0111ang di chuy\u1ec3n.<\/span>
\n+ C\u00f3 th\u1ec3 gi\u00fap ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp v\u00e0o internet nhanh v\u1edbi c\u00e1c kho truy\u1ec1n t\u1ea3i th\u00f4ng tin nh\u01b0 video, phim , nh\u1ea1c …<\/span>
\n+ C\u00f3 th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi \u1ee9ng d\u1ee5ng nh\u1eafn tin OTT nh\u01b0 facebook, skype, viber …<\/span>
\n+ M\u1ea1ng 3G c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng nhi\u1ec1u thi\u1ebft b\u1ecb h\u01a1n m\u1ea1ng 2G b\u1edfi \u0111a s\u1ed1 c\u00e1c thi\u1ebft b\u1ecb smartphone hi\u1ec7n nay \u0111\u1ec1u support m\u1ea1ng 3G.<\/span><\/p>\n

\"\"<\/span><\/p>\n

2\/ So s\u00e1nh 3G v\u00e0 4G<\/strong><\/span><\/h4>\n

4G c\u00f3 t\u00ean ti\u1ebfng anh l\u00e0 fourth-generation, \u0111\u00e2y l\u00e0 c\u00f4ng ngh\u1ec7 truy\u1ec1n th\u00f4ng th\u1ebf h\u1ec7 th\u1ee9 4 v\u00e0 l\u00e0 thi\u1ebft b\u1ecb kh\u00f4ng d\u00e2y, c\u00f3 th\u1ec3 truy\u1ec1n t\u1ea3i th\u00f4ng tin v\u00e0 d\u1eef li\u1ec7u t\u1ed1i \u0111a r\u1ea5t nhanh, c\u00f3 th\u1ec3 ch\u01b0a \u0111\u1ebfn 1,5gb\/s. \u0110\u00e2y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 thi\u1ebft b\u1ecb kh\u00f4ng d\u00e2y chu\u1ea9n theo t\u01b0\u01a1ng lai, khi ng\u01b0\u1eddi d\u00f9ng s\u1eed d\u1ee5ng m\u1ea1ng 4G c\u00f3 th\u1ec3 cho ph\u00e9p nh\u1eadp d\u1eef li\u1ec7u v\u1edbi t\u1ed1c \u0111\u1ed9 100 Megabyte\/gi\u00e2y khi di chuy\u1ec3n c\u0169ng nh\u01b0 l\u00e0 1 Gb\/gi\u00e2y khi \u0111\u1ee9ng y\u00ean, \u0111i\u1ec1u n\u00e0y cho ph\u00e9p ng\u01b0\u1eddi s\u1eed d\u1ee5ng c\u00f3 th\u1ec3 t\u1ea3i v\u00e0 truy\u1ec1n l\u00ean h\u00ecnh \u1ea3nh \u0111\u1ed9ng ch\u1ea5t l\u01b0\u1ee3ng cao.<\/span><\/p>\n

* So s\u00e1nh chi ti\u1ebft 4G v\u00e0 3G<\/strong><\/span><\/p>\n

Khi s\u1eed d\u1ee5ng m\u1ea1ng 4G<\/strong> th\u00ec cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng c\u00f3 kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i real-time t\u1ed1t h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi m\u1ea1ng 3G, \u1edf l\u00f5i m\u1ea1ng 4G c\u0169ng \u0111\u01a1n gi\u1ea3n h\u01a1n nhi\u1ec1u, khi \u0111\u00f3 s\u1ebd gi\u00fap truy\u1ec1n nhanh v\u1edbi th\u1eddi gian tr\u1ec5 th\u1ea5p h\u01a1n t\u1eeb 2 \u0111\u1ebfn 3 l\u1ea7n so v\u1edbi m\u1ea1ng 3G. Ch\u00ednh v\u00ec v\u1eady m\u1ea1ng 4G s\u1ebd nhanh v\u00e0 s\u1eed d\u1ee5ng \u1ed5 \u0111\u1ecbnh h\u01a1n nhi\u1ec1u so v\u1edbi m\u1ea1ng 3G. \u1ede kh\u00eda c\u1ea1nh t\u1ed1c \u0111\u1ed9 dowload th\u00ec m\u1ea1ng 4G s\u1ebd ch\u1eafc ch\u1eafn nhanh h\u01a1n t\u1ed1c \u0111\u1ed9 dowload \u1edf m\u1ea1ng 3G, theo t\u00ednh to\u00e1n l\u00e0 kho\u1ea3ng 14Mpbs v\u00e0 t\u1ed1c \u0111\u1ed9 upload l\u00e0 8Mbps<\/span><\/p>\n

Ch\u00ednh v\u00ec v\u1eady, vi\u1ec7c s\u1eed d\u1ee5ng m\u1ea1ng 4G h\u1ea7u nh\u01b0 c\u00e1i g\u00ec c\u0169ng mang l\u1ea1i t\u00ednh thu\u1eadn l\u1ee3i v\u00e0 kh\u1ea3 quan h\u01a1n, nh\u01b0ng ng\u01b0\u1ee3c l\u1ea1i \u0111\u1ec3 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ea1ng 4G th\u00ec \u0111\u00f2i h\u1ecfi chi ph\u00ed s\u1eed d\u1ee5ng cao, nh\u1eefng thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3 c\u0169ng ti\u00ean ti\u1ebfn h\u01a1n. Cho n\u00ean, n\u1ebfu s\u1eed d\u1ee5ng trung b\u00ecnh th\u00ec m\u1ea1ng 3G x\u1ee9ng \u0111\u00e1ng \u0111\u01b0\u1ee3c nhi\u1ec1u ng\u01b0\u1eddi s\u1eed d\u1ee5ng h\u01a1n.<\/span><\/p>\n

Hi v\u1ecdng v\u1edbi nh\u1eefng chia s\u1ebb tr\u00ean c\u1ee7a BacDau.Vn s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u v\u1ec1 3G v\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t c\u1ee7a 3G so v\u1edbi 2G v\u00e0 4G. Ch\u00fac c\u00e1c b\u1ea1n lu\u00f4n c\u00f3 th\u1eddi gian vui v\u1ebb b\u00ean BacDau.Vn nh\u00e9.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\u0110\u1ea1i \u0111a s\u1ed1 ng\u01b0\u1eddi d\u00e2n ch\u00fang ta \u0111ang s\u1eed m\u1ea1ng l\u00e0 3G. V\u1eady mang 3G l\u00e0 g\u00ec, n\u00f3 kh\u00e1c g\u00ec so v\u1edbi m\u1ea1ng 4G v\u00e0 2G? M\u1eddi c\u00e1c b\u1ea1n c\u00f9ng v\u1edbi B\u1eafc \u0110\u1ea9u\u00a0\u0111i gi\u1ea3i \u0111\u00e1p nh\u1eefng th\u1eafc m\u1eafc n\u00e0y nh\u00e9.<\/p>\n","protected":false},"author":1,"featured_media":4197,"comment_status":"open","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"kbtopic":[725],"kbtag":[],"_links":{"self":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kb\/4195"}],"collection":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kb"}],"about":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/types\/kb"}],"author":[{"embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/comments?post=4195"}],"version-history":[{"count":0,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kb\/4195\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/media\/4197"}],"wp:attachment":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/media?parent=4195"}],"wp:term":[{"taxonomy":"kbtopic","embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kbtopic?post=4195"},{"taxonomy":"kbtag","embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kbtag?post=4195"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}